Hello,
> The commit bcb81ac6ae3c ("iommu: Get DT/ACPI parsing into the proper
> probe path") changes the arm_smmu_probe_device() sequence.
>
> The arm_smmu_probe_device() is now called earlier via pci_device_add(),
> which calls pci_fixup_device() at the "pci_fixup_header" phase, while
> originally it was called from the pci_bus_add_device(), which called
> pci_fixup_device() at the "pci_fixup_final" phase.
>
> The callstack before:
> [ 1121.314405] arm_smmu_probe_device+0x48/0x450
> [ 1121.314410] __iommu_probe_device+0xc4/0x3c8
> [ 1121.314412] iommu_probe_device+0x40/0x90
> [ 1121.314414] acpi_dma_configure_id+0xb4/0x100
> [ 1121.314417] pci_dma_configure+0xf8/0x108
> [ 1121.314421] really_probe+0x78/0x278
> [ 1121.314425] __driver_probe_device+0x80/0x140
> [ 1121.314427] driver_probe_device+0x48/0x130
> [ 1121.314430] __device_attach_driver+0xc0/0x108
> [ 1121.314432] bus_for_each_drv+0x8c/0xf8
> [ 1121.314435] __device_attach+0x104/0x1a0
> [ 1121.314437] device_attach+0x1c/0x30
> [ 1121.314440] pci_bus_add_device+0xb8/0x1f0
> [ 1121.314442] pci_iov_add_virtfn+0x2ac/0x300
>
> And after:
> [ 215.072859] arm_smmu_probe_device+0x48/0x450
> [ 215.072871] __iommu_probe_device+0xc0/0x468
> [ 215.072875] iommu_probe_device+0x40/0x90
> [ 215.072877] iommu_bus_notifier+0x38/0x68
> [ 215.072879] notifier_call_chain+0x80/0x148
> [ 215.072886] blocking_notifier_call_chain+0x50/0x80
> [ 215.072889] bus_notify+0x44/0x68
> [ 215.072896] device_add+0x580/0x768
> [ 215.072898] pci_device_add+0x1e8/0x568
> [ 215.072906] pci_iov_add_virtfn+0x198/0x300
>
> Fixes: bcb81ac6ae3c ("iommu: Get DT/ACPI parsing into the proper probe path")
> Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
> [kwilczynski: commit log]
> Signed-off-by: Krzysztof Wilczyński <kwilczynski@xxxxxxxxxx>
So, this will go through the IOMMU three, correct? Once Bjorn adds his "Acked-by" tag.
Just want to make sure.
Krzysztof
